The harness system allows for a person's body weight to be offloaded as much as required in order for them to be able to walk. It works overground and fits comfortably around the treadmill (the treadmill is made for it). Here's what the treadmill looks like. And here's what the LiteGait looks like. I am asking $10,000 USD. It's perfect for anyone looking to work on their gait! PM me and I can send you updated pictures and exchange personal details!